Aug 02 04:14:51.901 INFO checking mockers-0.12.1 against 1.27.2 for lazy_static-1
Aug 02 04:14:51.901 INFO running: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:14:51.901 INFO creating container for: cargo +1.27.2 check --frozen --all --all-targets
Aug 02 04:14:51.901 INFO running `"docker" "create" "-v" "/tmp/crater.mioaL4ZATIw9:/source:ro,Z" "-v" "/home/ec2-user/crater/./work/local/target-dirs/lazy_static-1/worker-2/1.27.2:/target:rw,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home:/cargo-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/rustup-home:/rustup-home:ro,Z" "-v" "/home/ec2-user/crater/./work/local/cargo-home/git:/cargo-home/git:rw,Z" "-e" "USER_ID=500" "-e" "CMD=cargo +1.27.2 check --frozen --all --all-targets" "-e" "CARGO_INCREMENTAL=0" "-e" "RUST_BACKTRACE=full" "-e" "RUSTFLAGS=--cap-lints=forbid" "crater"`
Aug 02 04:14:52.095 INFO blam! c2e2d460455f65c128b7c68ee24acbe67c5af8508564bdf16de8ac6f1156307c
Aug 02 04:14:52.100 INFO running `"docker" "start" "-a" "c2e2d460455f65c128b7c68ee24acbe67c5af8508564bdf16de8ac6f1156307c"`
Aug 02 04:14:53.671 INFO kablam!    Compiling itertools v0.4.19
Aug 02 04:14:53.671 INFO kablam!     Checking mockers v0.12.1 (file:///source)
Aug 02 04:14:54.557 INFO kablam! error[E0554]: #![feature] may not be used on the stable release channel
Aug 02 04:14:54.557 INFO kablam!  --> src/lib.rs:1:1
Aug 02 04:14:54.557 INFO kablam!   |
Aug 02 04:14:54.557 INFO kablam! 1 | / #![feature(fnbox, inclusive_range_methods, alloc, collections_range,
Aug 02 04:14:54.557 INFO kablam! 2 | |            inclusive_range, inclusive_range_fields, specialization)]
Aug 02 04:14:54.557 INFO kablam!   | |____________________________________________________________________^
Aug 02 04:14:54.572 INFO kablam! 
Aug 02 04:14:54.579 INFO kablam! error: aborting due to previous error
Aug 02 04:14:54.579 INFO kablam! 
Aug 02 04:14:54.579 INFO kablam! For more information about this error, try `rustc --explain E0554`.
Aug 02 04:14:54.592 INFO kablam! error: Could not compile `mockers`.
Aug 02 04:14:54.592 INFO kablam! warning: build failed, waiting for other jobs to finish...
Aug 02 04:14:57.276 INFO kablam! error: build failed
Aug 02 04:14:57.278 INFO kablam! su: No module specific data is present
Aug 02 04:14:57.774 INFO running `"docker" "rm" "-f" "c2e2d460455f65c128b7c68ee24acbe67c5af8508564bdf16de8ac6f1156307c"`
Aug 02 04:14:57.903 INFO blam! c2e2d460455f65c128b7c68ee24acbe67c5af8508564bdf16de8ac6f1156307c